CVE-2026-39199
snes9x Out-of-Bounds Write
Description
snes9x 1.63 allows an out-of-bounds write and denial of service via a crafted .ups file.
INFO
Published Date :
June 17, 2026, 6:17 p.m.
Last Modified :
June 22, 2026, 8:42 p.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-39199
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | LOW | 8254265b-2729-46b6-b9e3-3dfca2d5bfca | ||||
| CVSS 3.1 | LOW | MITRE-CVE | ||||
| CVSS 3.1 | LOW | [email protected] |
Solution
- Update snes9x to the latest version.
- Apply vendor patches if available.
- Avoid opening untrusted .ups files.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-39199.
| URL | Resource |
|---|---|
| https://github.com/snes9xgit/snes9x/commit/96b366100172723f6314c40e237b370f4f7b59f4 | |
| https://github.com/snes9xgit/snes9x/issues/1035 | |
| https://karansaini.com/snes9x-oob-write/ |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-39199 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-39199
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-39199 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-39199 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-39199', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-17T18:10:08.019633Z'} -
New CVE Received by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Snes9X team', 'product': 'Snes9X', 'versions': [{'status': 'affected', 'version': '1.63', 'versionType': 'custom'}], 'defaultStatus': 'unknown'}] Added Description snes9x 1.63 allows an out-of-bounds write and denial of service via a crafted .ups file. Added CVSS V3.1 AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L Added CWE CWE-787 Added Reference https://github.com/snes9xgit/snes9x/commit/96b366100172723f6314c40e237b370f4f7b59f4 Added Reference https://github.com/snes9xgit/snes9x/issues/1035 Added Reference https://karansaini.com/snes9x-oob-write/